Seed torrent when done

[BastienClement]

Once a torrent is fully downloaded, torrent-stream should switch into a seed-mode until destroyed in order to be a better swarm citizen.

mafintosh/peerflix/issues/58
popcorn-official/popcorn-app/issues/80
asapach/peerflix-server/issues/6

It will still be stoppable once pause/resume functionnality is implemented #49.

[asapach]

In my experience it depends on the health of the torrent: when there are few seeders, t-s seeds just fine even after completing the download.
The issue is probably caused by the fact that peerflix and peerflix-server don't listen for incoming connections and as the result peers can't break through. This raises the NAT issues like port mapping, nat-upnp and nat-pmp.

[BastienClement]

I opened this issue after reading (from @mafintosh in the peerflix repo)

Yeah - it's probably torrent-stream has a choke timeout that is triggered since we do not wan't any more data. torrent-stream then disconnects the peer. It probably shouldn't do this when it is seeding.

I agree however that low-seeded torrent keep uploading when completed.

This is maybe only a misconception due to well-seeded torrents + engine.swarm.pause() + NAT.